Name: Sigma ProConnex Grounding Fittings 5/8-in Bronze Grounding Clamp
Brand: Sigma ProConnex
SKU: 1099921
Price: 4.38 USD
Availability: InStock
Rating: 4.8 (256 reviews)

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The Sigma ProConnex Ground Rod Clamps are used to connect bare copper conductors directly to a driven ground rod or rebar. These fittings are suitable for direct burial in the ground and concrete.

Connects grounding conductors to ground rods and are approved for direct burial in earth and concrete
For 1/2-in and 5/8-in Copper Rod
For #10 to #2 Wire
For #4 - 1/2-in Rebar
Includes 3/8-in - 16 stainless steel bolt
Copper alloy construction
Product is cULus listed

General
Type	Clamp	Sub Type	Grounding
Use Location	Indoor/Outdoor	Package Quantity	1
Material	Bronze	Series Name	Grounding Fittings
Package Contents	1 per bag

Dimensions
Height (Inches)	1.5	Length (Inches)	0.5
Trade Size in Inches	5/8-in	Width (Inches)	1

Features
Corrosion Resistant	Yes	Weatherproof	No
Fire Resistant	No	Rust Resistant	Yes
Weather Resistant	No

Compatibility
Schedule 80 PVC Compatible	No	Flexible Metal Conduit Compatible	No
Schedule 40 PVC Compatible	No	Rigid Metal Conduit Compatible	No
Intermediate Metal Conduit Compatible	No	Galvanized Rigid Conduit Compatible	No
Electrical Metal Tubing Compatible	No	Liquid-tight Conduit Compatible	No

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -	Safety Listing	UL safety listing

Warranty
Warranty	None

Miscellaneous
UNSPSC	39131700

Check out the Best Selling Conduit Fittings on Lowes.com

Review

4.8 out of 5

256 Reviews

96% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

What Customers Are Saying

Customers overwhelmingly praise the ground rod clamp for reliable performance and robust brass construction that resists corrosion in outdoor installations. Most report it works exactly as intended for grounding applications including 200A service, generator bonding, and electric fencing. The heavy-duty design fits standard 5/8" rods and common wire gauges securely without extra parts. Users appreciate the intuitive tightening mechanism and solid feel. A few rare instances of over-tightening caused cracking, but overall customers consider it a trusted, durable component for electrical safety systems.

Customer review summary generated by AI, including incentivized reviews.

256 Customer Reviews

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Bronze grounding clamp.

it was great for what I used it for

NanceSeptember 7, 2026
Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Sigma ProConnexGrounding Fittings 5/8-in Bronze Grounding Clamp
		Price	^$ 4 ^.38
		Ratings	256
		Type	Clamp
		Material	Bronze
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^$ 3 ^.98	^$ 5 ^.68	^$ 5 ^.68	^$ 18 ^.48	^$ 4 ^.98	^$ 7 ^.48	^$ 18 ^.48	^$ 7 ^.18	^$ 5 ^.78
61	1292	103	84	86	901	408	40	398
Strap	Connector	Clamp	Cap	Connector	Elbow	Connector	Clamp	Connector
Zinc-plated steel	Die cast zinc	Bronze	Aluminum	Die cast zinc	PVC	Plastic	Bronze	Plastic